Morty's Gastly is one of Morty's three Pokémon.
It's debut and only appearance was in From Ghost to Ghost when it was the first Pokémon Morty sent out for his Gym Battle with Ash. Outside of being revealed by Ash's Noctowl's Foresight, it easily dodged all of Noctowl's moves and even hit Noctowl with a Lick attack before Ash brought it back and sent out Pikachu. It managed to defeat Pikachu with a single Night Shade attack. It eventually fell to Ash's Cyndaquil's Tackle.